Change is not needed

Change. Change. Change. No Change is needed i would say. What do you say?
Daily in the BMTC buses i find lot of people struggle for change. The ticket cost is INR 13. Give the conductor 2 x 10 Rs note,the conductor gives you a ticket with 7 mentioned at its back. U forget it..its a little fortune for the conductor. I even remember one time a guy forgot to get a change for 83 rupees for the 100 rupee note he gave as he got down at his stop and realized that he lost the money a little later. For no fault of his , the conductor is too put through this unnecessary KARMA cycle,where in he gets indebted to lot of unknown faces.
This also causes bit of greed,bad blood,foul mouthing also!
Well we are in age of technology. We have become SMART in many ways. Why not have a SMART card for loading these transactions of coins/changes? Anyway all conductors have an automated machine which generates ticket. Swipe your SCC(Smart change card to the already list of acronyms and Shortcuts for these days) just like you swipe your normal ATM/Credit card/Debit card in this machine. The operator can load this balance into this card whenever it is to be given. The passenger can inturn use the SCC to buy tickets if the collected amount is more. Well here it will be inappropriate to discuss to much technical things and i do agree there are certain bottle necks that needs to be considered. Nevertheless, having such an integrated Smart card can help us over all to reduce the coin minting cost and the metal usage.
Gone are those days where we found 1RE and 2 Rs coins heavy. These days 50NPS, 1 Re,2 Rs are too light that these may be carried by a gentle breeze!